One of the biggest restrictions that we face as Android users is "device incompatibility" issues in the Market, even though the app in question may work perfectly on our device. For example, according to the Android Market, Plants Vs. Zombies is "incompatible" with my Galaxy Tab 10.1; however, when it was initially released to the Amazon Appstore (and before Popcap was bought by EA), I always played it on the Tab.